Time: regularity

たびに

V (dictionary)

N + の

+ たびに

Means “whenever”, “every time”.

Example

犬いぬを見みるたびに幸しあわせになる。 Whenever I see a dog, I feel happy.

おきに

Means “every other”. This is used for repeated intervals, after a noun indicating something measurable.

Example

この電車は４分おきに出しゅ発っぱつします。 This train leaves every four minutes.

ごとに

V (dictionary)

N

+ ごとに

Means “each”, “every”. Used for intervals.

Example

彼女かのじょに会あうごとに、心こころがドキドキする。 Every time I see her, my heart pounds.

おきに vs ごとに

The way the intervals are counted between these two grammar structure is different.

• おきに refers to what is inside the interval.
• ごとに refers to the interval per se.

Example

１日おきに =２日ごとに = every other day = every second day ●○●○●○●

２日おきに =３日ごとに = every three days = every third day ●○○●○○●○○●